Material:Nylon + Spandex SIZE CHART: S:suitable for leg circumference 37-43cm/14.5-17 inch; M:suitable for leg circumference 43-48cm/17-19 inch; L:suitable for leg circumference 48-53cm/19-21 inch; XL:suitable for leg circumference 53-58cm/21-23 inch; ABSORBENT, BREATHABLE, SKIN-FRIENDLY CORMFORT - Using three-dimensional wearing, fiber cross-section coverd space, it can instantly absorb and evaporate large amounts of water, circular breathing, in order to protect the movement of the knee, to keep cool and comfortable. 3D THREE-DIMENSIONAL STRUCTURE OF WOVEN - High-precision 3D cutting technology of knitting, ergonomic, 360-degree body curve perfect fit knee, wearing more comefortable. Contoured Fit allows for maximum comfort and prevents slippag. RECOVERY REHABILITATION -- Suitable for Knee pain and discomfort, mild strain prain, knee fatigue, patellar instability, fitness and great for sports. Workout with a peace of mind. SUPERIOR DURABILITY -- Premium stitching and construction. Wonderful companion when you play football, basketball, mountaineering, Breathable and sweat absorb. The only knee sleeve you will ever need.